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Digital I/O Features
2-25
●
When using digital control signal TGIN as a gate, TGOUT behaves as
shown in Figure 2-9b. Note that there is a delay of about 200ns
between the active edge of TGIN and the starting edge of TGOUT.
●
When using an internal trigger/gate, TGOUT behaves as shown in
Figure 2-9c. Note that the delay between the active edge of the
internal trigger/gate and the starting edge of TGOUT is less than 1µs.
Note:
You can use TGOUT only when the onboard internal pacer clock is
timing conversions.
Figure 2-9. Timing for the TGOUT Signal
Software enables
conversions
Software disables
conversions
< 1µs
c. Internal Trigger/Gate
200ns typical
b. TGIN as a Gate
200ns typical
a. TGIN as a Trigger
Remains active until
conversions are
disabled by software
TGOUT
TGIN
TGOUT
TGIN
TGOUT
Internal
Trigger/Gate
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